Chrono for 9, 40 .357S

[Jeff82]

Here's some recent chrono data for:
9mm
Winchester 115 FMJ
PMC 115 FMJ
Federal 124 EFMJ
357Sig
Winchester 125 FMJ
40
Winchester 165 FMJ
Federal 180 HST
Federal 165 EFMJ
Speer 165 GDHP

(varying # shots depending on what I had on hand)

[wabbles]

Thanks for taking the time to post your data. Is there any chance you could post the data in another format? The attachment is causing my computer to lock up. Thanks

[unit1069]

I couldn't access the info either.

[Boris Bush]

worked for me

[pimuk]

Thanks Jeff82.

[Jeff82]

Lessee, it's an Excel file that I've zip'd with Winzip.

Here's one saved as a text (*.txt) file. Not as readable (ammo not separated by colors) and you'll need to turn Word Wrap "off" to get the proper format... Double click after saving and it should open in NotePad.

Still may be more confusing...


You can get Winzip or PKzip and an Excel reader for free from the internet. That would make life much easier for you when negotiating these files.

Also, the Excel file is a worksheet fixed to where I just add the velocities and it calculates all the rest. The text file is just that, text like on a typewriter. Your trouble with the Excel file may be due to security settings not wanting to allow the "behind the scenes" calculations to take place.

[Jeff82]

Seeing as I've got your attention (hehe) here's one of my older files (with some new info throughout)...

[Jeff82]

Now includes Federal 147 gr HST from three Glocks: G19, 17, and 34 (and some 117 gr .257 Roberts +P fired in an Ackley chamber.)

Basically:
19: fps: 1013 fpe: 335 PF: 149 ES: 41 SD: 13
17: fps: 1035 fpe: 349 PF: 152 ES: 37 SD: 13
34: fps: 1041 fpe: 354 PF: 153 ES: 27 SD: 9

Enjoy!

ETA: Updated zip 1522 19 Jul 08

[carbofan21]

jeff, thanks a lot for sharing this. i had a feeling speer loaded their stuff fairly warm, but had no idea just how much faster they go than the competition. their 9mm 124 grain +p is way up there

i must say i'm quite pleased with the numbers for the 9mm 147 grain HST, but not so much for the .40 180 grain HST. looks like the 165 or 180 grain gold dot would be the way to go

thanks again!

[Jeff82]

Thanks. I've still got some work to do (bringing the new info to the "master chart" and updating "advertised" links). I'll get to it as/when I can.

I've been finding that I'm much better and enjoy plinking/shooting at the range with the non +P loads. I'm better and faster with them and it's a pleasure to shoot. So long as street experience shows them to be adequate I'll stick with a more controllable gun than going for pure "horsepower".

I was thinking about the whole fpe thing and thought that maybe we give too much importance to fpe. Case in point: a 357 Sig with 500 fpe should theoretically be able to knock a 50 pound weight 10 feet up a ladder (friction not included) but we know that isn't going to happen. Likewise, a 350 fpe load will not move said weight much either but it's performance would be very similar to the Sig. Still, we'll argue over two rounds because there's a 10 or 15 fpe difference in them or choose one round over another because it's got 413 while the other has only 409! :dunno:

I've concluded that so long as we're in the ~350-375 fpe ballpark we should be good and have a cartridge that is very controllable.

However, penetration >12" is paramount (reliability of course is King!), with bullet effect second in importance. Combined with a controllable gun (~350 fpe) and you've got a winning combination! :)

While getting a hit is good, it's fast repeated hits that will pull your bacon out of the fire. :thumbsup:

[carbofan21]

I was thinking about the whole fpe thing and thought that maybe we give too much importance to fpe. Case in point: a 357 Sig with 500 fpe should theoretically be able to knock a 50 pound weight 10 feet up a ladder (friction not included) but we know that isn't going to happen.

also, you would have to take into account the gravity constant. assuming zero friction, a better analogy would be to push a 50 lb weight for 10 feet horizontally along the ground (assuming the bullet hit at a 0 or 180 degree angle). but that itself is also quite a stretch. i agree that fpe is overrated to an extent

energy is conserved, according to the law of conservation of energy. however, the majority of the kinetic energy of a bullet is most likely converted to heat energy

thus, a 125 grain 357sig bullet traveling at 1400 fps might hit a little harder, yet penetrate to about the same depth as a 124 grain 9mm bullet traveling at 1100 fps. the main difference is there would be more heat transferred from the sig bullet

[Jeff82]

also, you would have to take into account the gravity constant. assuming zero friction, a better analogy would be to push a 50 lb weight for 10 feet horizontally along the ground (assuming the bullet hit at a 0 or 180 degree angle). but that itself is also quite a stretch. i agree that fpe is overrated to an extent

energy is conserved, according to the law of conservation of energy. however, the majority of the kinetic energy of a bullet is most likely converted to heat energy

thus, a 125 grain 357sig bullet traveling at 1400 fps might hit a little harder, yet penetrate to about the same depth as a 124 grain 9mm bullet traveling at 1100 fps. the main difference is there would be more heat transferred from the sig bullet

And much more in the way of "felt recoil".

(I was trying to stay close to the simple definition of "1 fpe = one pound raised one foot".)

[carbofan21]

And much more in the way of "felt recoil"

no doubt. i'm quite happy with the way my g19 handles with the 147 grain HST. accuracy is terrific, recoil is tame, noise and muzzle flash are at a minimum.

i'm wondering if federal may have downloaded the 180 grain HST to a certain extent because of too much expansion?

[glockophilic]

http://i261.photobucket.com/albums/ii73/jbenaknin/data.jpg

[glockophilic]

can everyone see this?

[Jeff82]

can everyone see this?

Yeah. How'd you do that? Screen shot?

If you could, would you edit that and include "Chrono w-EM" so folks know which spreadsheet it came from?

Thanks.

[wabbles]

Thanks to both for posting the data. Those of us that do not have chronos, love this stuff. Much appriciated